William john moelleb



W. J. MOELLER. ELASTIC 0R ExPANslBLE PAVING JGINT.

APPLICATION FILED FEB. l5, 1919- Ressued June 1, 1920.

UNITED STATES PATENT OFFICE.- v

WILLIAM JOHN MORLLRR, OF WYOMING, OHIO, AssIGNOR To THE PHILIP cARRyMANUFACTURING COMPANY, or LOOKLAND, OHIO, A CORPORATION OF OHIO.

Specification of Reissued Letters Patent. Risslled 1111 1,1920.

Original No. 1,220,766,dated March 27, 1917,'Seria1 No. 707,773, 'filedJuly 5, 1912. AppIieation for reissue led February 15,' 1919. Serial No.277,360.

To all whomct may concern :l

Be it known that I, WILLIAM` JOHN Monn- LER, a citizen'of the UnitedStates, residing' y invention relates to means for providing for thecontraction and expansion of street paving.

The object' of my invention is to provide simple, convenient, economicalandeficient means for taking up the contraction and expansion in streetpavements formed of brick, granite blocks, and the like and to form thesame asa permanent part of the pavement' While the pavement is beingmade.

vMy invention consists in the construction, combination and arrangementof parts and to the process as herein set forth and 'Pavementsconsisting of brick, granite blocks, wood blocks and the like will'contract and expand in accordance .with the cha-'nge of temperature.Then the tempera-A tureis warm the material comprising the pavement willexpand, and when thetemperature is colder the material will contract. t,therefore, becomes necessary tol place expansible'material in saidpavement at interi vals to compensatev for'this contraction andexpansion of the' material comprising the pavement. It has heretoforebeen necessary,

in .building the pavement, to place thin' strips- Of wood between thelayers of granite `or brick, and `after tthe `same are placed inposition, to withdraw the boards and fill the space thus formed,withcoal 'tar pitch', and other materials. y y L In the drawings, whichserve to illustrate' invention:

Figure v1 isa perspective view representlthe construction,applicationand use of ing 'a paved streethaving myelas'tic paving joint.permanently embedded 'therein between the paving blocks and the/curbandat intervals transversely of' the pavement and` extending across, thestreet 'Y between the curbs; f'

Fig. 2 is a perspectivejview upon'lay larger scale showing av section ofelastici, paving Joint and a row of paving blocks abutting it upon oneside; and i rolled back. y l My invention :comprises strips of materialcomposed of a plurality of layers of heavy soft' felt l, each of whichis thoroughly saturated or impregnated with asphalt compound 2 insuchquantity as is required, the

same depending Onthe climatic conditions. Y l

It is desirable that the felt be saturated to an extentl which will notcause the asphalt i Y compoundv to run in hot weather. `When sosaturated it will notA crack in cold weather.

The felt isfirst saturated,as stated, and a l plurality ofy layers of'the saturated material l are secured together by layers of asphalt 7 ofsufficient thickness to withstand the va* rious conditions oftemperature or climatic` conditions, as above set forth.

rfhe strips. of material thus formed are preferably about one-half inchthickand of a width to 'correspond with the vertical 'Y thickness of thegranite block or the brick-3 composing the pavement, rand -may .beformed in any length desired. 'llhesestrips 4 may be inserted atintervals of f-ty feet., more or less, depending on the amount ofcontraction and expansion vnecessary to be compensated` for, and mayextend from curb 5 to curb 6 or from the Streetcar rail to the curb lasthe casemaybe in one or ymore-sections, as desired, Or they maybeintroduced at still other places to constitute elastic `Vjoints' orfillers between' adjacent parts of I the pavement. For' taking up thelateral contraction and expansion of the pavement I place these stripslengthwise adjacent the curb and lay the brick or granitepavement blocks3 against the same.= 'Thesestrips l Vwhen Once placed `in position,become a lpermanent -part of the pavement and it is .unnecessary'toremove them. Thus theexpense of placing a temporary board in` positiontoV form al'space forthe lcoalitarpitch', removing the'same andfilling'it with .coal-l tar used between the several blocks or paving.

The uniting of the several strips of felt "pitch, is dispensed with.' Atthesame time,

a more-elastic, expansible, firm,.secure,l solid andA substantial'structure isA permanently se- 'cured inplace, and-any cracks or crevicesbetween 'it' and the adjacent :pa-vement or curb are filled with'coaltarpitch such as is or other dense matted material together,

and theimpregnation or saturation of the same, produ'ces` as a whole, asolid, tough, relatively rigid article of block-like or board character,well adapted to. perform the functions for which the same is intended.`The addition of the intermediate layers or walls of asphalt between thefelt strips not only assists in preserving the otherwise impregnatedstrips by making them waterproof, etc., but the distinct walls ofasphalt permit a substantial amount of yield or play of the stripsface-wise relative to each other so that they may adjust themselves 15:when ther member as a whole is bent or desent integral portions of thebody to the adjacent faces of -the` paving blocks, etc., and by reasonof the adhesive character of the joint,-incident to its impregnation,-v

the exposed surfaces of the joint and the 40 adapted for workunderground.

' is completely protected by this indestructiblocks, etc., will adhere,to the end that the pavement membersv are eectually bonded togetherthroughout and the joint or filler prevented from displacement.

The asphalt used in vthis structure is so tempered that it is notaffected by weather conditions, being free from moisture, ash and otherimpurities, and is es eciall he fe t ble asphalt and insures a permanentstreet paving joint. It makes a compact board which is easily handledand is a great saving in time and labor and the cost of material in theconstruction of the joint in accordance with my invention as comparedwith previous methods. Y

An advantage of my construction of pavving joint is that it `will notrun like the pitch in summer, or crack like pitch in winter, nor will itrun to the gutter on arched streets like coal tarpitch.

Finally, this paving joint is superior to others because it makes a morelasting and satisfactory street.

My` invention is capable of some modi- 'fication without materialdeparture from its scope or spirit, as for instance, any suitable waterproofing material may be substituted for the asphalt compound.

I claim f ments comprising a board composed ofseparate layers of softfelt saturated with asphalt compound, bonded together by a distinctinterposed layer of asphalt, compressed into a relatively hard solidbody capable of substantial compression an'd ex ansion, and presenting atough non-frayab e wearing edge.

2. An expansion joint for street pavements com rising a board composedof a body of sog felt impregnated with an asphalt compound andcompressed into `a relatively hard solid condition to render the samecapable of allowing for heavy pressures, without fracture, and resentinga vtough non-frayable wearing e ge.

3. In combination with a street pavement formed of brick or equivalentmaterial, an elastic joint permanently embedded in said pavementcomprising a plurality of flatA strips of matted eXpansible materialsaturated with asphalt compound, and having a distinct fiat strip ofasphalt formin a body of considerable .thickness secured etween andbinding each two adjacent strips of matted vexpansible material, saidjoint being permanently disposed edgewise in said pavement,substantially as set forth and for the purpose specified. l

4. An expansion joint forstreet pavements comprising a board composed ofa body of soft material impregnated with an asphalt compound andcompressed into a relatively hard solid condition to render the samecapable of allowing for heavy pressures without fracture.

5. An expansion joint for street pavements, comprising a board composedof a supporting layer, and ay layer of asphalt com ound compressedtogether into a relative y hard solid condition to render the samecapable of allowing for Iheavy pressures without fracture. y

6. An expansion joint for. street pavements comprisinga board composedof a supporting layer, and a layer of asphalt compound secured togetherinto a relatively hard solid condition tov render the same capable ofallowing for heavy pressures without fracture.

'7. An expansion joint for street pavements comprising a board composedof a supporting layer and a layer of asphalt compound secured togetherinto a relatively hard solid condition. 1

8. An expansion joint composed of a soft material saturated with awaterproofing substance and forming a relative rigid block or board-likestructure.

WILLIAM JOHN MOELLER.

